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Title: Impact of Triethanolamine as an Additive for Rechargeable Alkaline Zn/MnO 2 Batteries under Limited Depth of Discharge Conditions

Rechargeable alkaline Zn/MnO 2 batteries are being developed for use as cost-effective grid-scale energy storage devices. Previous studies have shown that limiting the depth of discharge (DOD) of the MnO 2 cathode extends cell lifetime while still providing a cost-effective battery system. Herein, a comprehensive study of triethanolamine (TEA) as an additive in Zn/MnO 2 limited DOD batteries is provided by examining the effect of TEA in full cells as well as independently on the cathode, anode, separator, and electrolyte. Improvement in cycle-ability of the cathode (on average, 80% of cycled capacity remains after 191 cycles without TEA, 568 cycles with TEA) and a decrease in ionic zinc mobility across Celgard 3501 (7.91 × 10 -5 cm 2/min without TEA, 3.56 × 10 -5 cm 2/min with TEA) and Cellophane 350P00 (3.26 × 10 -5 cm 2/min without TEA, 4.74 × 10 -6 cm 2/min with TEA) separators upon the addition of TEA are demonstrated. However, TEA increased both the reduction potential of Zn (-0.68 V vs. Hg/HgO without TEA, -0.76 V with TEA) and the solubility of Zn 2+ (0.813 M without TEA, 1.023 M with TEA). Overall, the addition of TEA extended the lifetime of limited DOD cellsmore » on average by 297%.« less
Authors:
 [1] ;  [1] ; ORCiD logo [1] ;  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States). Dept. of Materials, Devices, and Energy Technologies
Publication Date:
Report Number(s):
SAND2018-3127J
Journal ID: ISSN 0013-4651; 661715
Grant/Contract Number:
NA0003525
Type:
Accepted Manuscript
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 164; Journal Issue: 14; Journal ID: ISSN 0013-4651
Publisher:
The Electrochemical Society
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Electricity Delivery and Energy Reliability (OE)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; additive; batteries
OSTI Identifier:
1432475

Kelly, Maria, Duay, Jonathon, Lambert, Timothy N., and Aidun, Ruby. Impact of Triethanolamine as an Additive for Rechargeable Alkaline Zn/MnO2 Batteries under Limited Depth of Discharge Conditions. United States: N. p., Web. doi:10.1149/2.0641714jes.
Kelly, Maria, Duay, Jonathon, Lambert, Timothy N., & Aidun, Ruby. Impact of Triethanolamine as an Additive for Rechargeable Alkaline Zn/MnO2 Batteries under Limited Depth of Discharge Conditions. United States. doi:10.1149/2.0641714jes.
Kelly, Maria, Duay, Jonathon, Lambert, Timothy N., and Aidun, Ruby. 2017. "Impact of Triethanolamine as an Additive for Rechargeable Alkaline Zn/MnO2 Batteries under Limited Depth of Discharge Conditions". United States. doi:10.1149/2.0641714jes. https://www.osti.gov/servlets/purl/1432475.
@article{osti_1432475,
title = {Impact of Triethanolamine as an Additive for Rechargeable Alkaline Zn/MnO2 Batteries under Limited Depth of Discharge Conditions},
author = {Kelly, Maria and Duay, Jonathon and Lambert, Timothy N. and Aidun, Ruby},
abstractNote = {Rechargeable alkaline Zn/MnO2 batteries are being developed for use as cost-effective grid-scale energy storage devices. Previous studies have shown that limiting the depth of discharge (DOD) of the MnO2 cathode extends cell lifetime while still providing a cost-effective battery system. Herein, a comprehensive study of triethanolamine (TEA) as an additive in Zn/MnO2 limited DOD batteries is provided by examining the effect of TEA in full cells as well as independently on the cathode, anode, separator, and electrolyte. Improvement in cycle-ability of the cathode (on average, 80% of cycled capacity remains after 191 cycles without TEA, 568 cycles with TEA) and a decrease in ionic zinc mobility across Celgard 3501 (7.91 × 10-5 cm2/min without TEA, 3.56 × 10-5 cm2/min with TEA) and Cellophane 350P00 (3.26 × 10-5 cm2/min without TEA, 4.74 × 10-6 cm2/min with TEA) separators upon the addition of TEA are demonstrated. However, TEA increased both the reduction potential of Zn (-0.68 V vs. Hg/HgO without TEA, -0.76 V with TEA) and the solubility of Zn2+ (0.813 M without TEA, 1.023 M with TEA). Overall, the addition of TEA extended the lifetime of limited DOD cells on average by 297%.},
doi = {10.1149/2.0641714jes},
journal = {Journal of the Electrochemical Society},
number = 14,
volume = 164,
place = {United States},
year = {2017},
month = {12}
}

Works referenced in this record:

Electrolyte additives for zinc-anoded secondary cells I. Brighteners, levellers and complexants
journal, December 1989